No it is supposed to fit together nicely, but Murenas have never been known for perfect assembly quality in the body.Second photo, however, looks like the front bumper is loose somewhere. It's nothing serious: Get under the front end and check the mounting points.

The front of the Murena is riveted together and made up almost completely of glass fiber panels. The chassis more or less only extends enough to carry the front susspension. A few loose rivets or rusted through metal joints, and it starts looking like what you have.

Wohoo... was a bit worried there for a moment.... Seems some PO have tried to rewire the lights, could be he didn't do a good job putting it together again. Since it does seem like he must have removed the front to get to everything.

Yes, we've seen that photo of the relays before from Björn-Anders I think it's possible to get access to all wiring without actually taking the front bumper off, but it does require some "arm twisting"

Does anybody know what this connector connects, and if it should look like this inside.....?

Of course

It is one of the three connectors connecting the front wiring loom to the rear wiring loom.

It looks a bit greasy, but that's in fact a good thing as long as there are proper connections. The grease helps keep water away, and water is the worst enemy of these connectors as it causes corrosion, bad connections, hot connections, and eventually melted housings. I note that the housings here look okay, and apart from the greas, it also looks like the tabs in the housings are okay too. I suggest you clean the old grease out, carefully inspect the tabs, and then regrease it all using silicone grease.

If you are correct Anders(which I do not doubt for a second), the perhaps this could be the famous fault for the temp.... Being connector CC6, it should contain wire 94, which is the temp sender unit wire....

Could it be that there has been a poor connection here which doesnt give me a reading, but is good enough when it is grounded to give a reading.....?